M2012SA1W40

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Toggle Switches

toggle switches are ubiquitous in electronic circuits as they are one of the simplest and most reliable action components to use. The M2012SA1W40 toggle switch is one of the most widely used models available and this article examines the switch’s application field and how it works.

Application Field

The M2012SA1W40 is a miniature snap-action slider switch, or a “toggleswitch”, that is available in two types. These two types are the on/off and momentary action single pole, single throw versions. This toggle switch can be used in a wide range of applications including those involving control panels, computer peripheral pieces and automotive wiring. The switch is mainly used with low voltage applications and the on/off single pole action version is rated to operate up to 10 amps at 125 maximum volts while the momentary single pole action version is rated up to 0.02 amps at up to 125 volts.

Working Principle

The M2012SA1W40 is a miniature, snap action slider switch. When activated, the switch is completed within 0.3 milliseconds The toggle switch uses a standard single pole, single throw (SPST) switching mechanism. When the lever is moved from one position to the other, a suspension spring and two raised contact fingers inside the sliding are forced together, making a connection.

The toggle switch’s base is made from copper or copper-plated steel and the contact finger and snap action spring is made from brass that is plated with nickel and gold. The toggle switch also has an internal plastic insulation lining to ensure protection against any electrical shorts or sparks.

The switch is typically operated using a small togle lever and on either side of the switch, you will find two terminals. When the toggle switch is activated, the spring is compressed and the two terminals are forced together, creating a connection and thus activating the switch. When the switch is deactivated, the spring uncompresses and the two terminals move apart, breaking the connection and deactivating the switch.

Conclusion

The M2012SA1W40 is a widely used miniature snap-action toggle switch that can be used in a variety of applications. It is rated for up to 10 amps at 125 maximum volts for the on/off single pole action version and 0.02 amps at 125 volts for the momentary single pole action version. The switch is operated via a toggle lever and contains a suspension spring and two raised contact fingers inside the switch that forces the terminals together when activated. The base is made from copper or copper-plated steel and the contact finger and snap action spring is made from nickel-plated brass.

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